Wheel-track rolling behavior simulating test stand of wheel track

Abstract

The invention relates to a wheel-track rolling behavior simulating test stand. A ring of large groove is formed in the edge of the upper surface of a high-speed rotary disc, a simulated sleeper is embedded in the bottom of the large groove, a small groove is formed in the upper of the simulated sleeper, and rubber and a flange of a steel rail are embedded successively from bottom to top in the small groove; the upper two sides of the flange of the steel rail are provided with simulated elastic strips respectively, and the simulated elastic strips cover the upper of the rail flanges and the sleeper simultaneously; bolts penetrate the corresponding simulated elastic strips and the simulated sleeper successively and are then fixed to the bottom of the large groove of the high-speed rotary disc in a threaded way; and the left end of a wheel transmission motor shaft is connected to a shaft of a simulated wheel above a revolution steel rail via a high-speed gearbox and a universal shaft coupling, the shaft of the simulated wheel is mounted on a bearing pedestal via the bearing, and the upper end of the bearing pedestal can be connected with a loading door frame via slide rail capable ofmoving horizontally, a 3D force displacement sensor and a vertical loader successively. The test stand can simulate and reproduce the high-speed wheel-track relation and damage characteristics, and issimple in operation, high in measuring precision and high in reproductivity of experimental data.

Description

technical field [0001] The invention relates to a wheel-rail rolling behavior simulation test bench device. Background technique [0002] With the rapid development of my country's economy, high-speed railway transportation is more and more popular. Train traction, running and braking must be realized through the rolling friction contact between the wheel and rail. The wheel-rail system is a key component of railway transportation. A lot of manpower and financial resources have been invested in the research of the wheel-rail relationship. [0003] The rolling contact behavior between the wheel set and the track is very complex: the left and right wheel-rail contact spots interact with each other, special geometric profiles, high-speed rolling and sliding of the wheel set relative to the rail, structural deformation of the wheel set and track, rough wheel-rail contact surface Factors such as temperature, third medium (such as water, oil, sand, leaves, etc.), wheel-rail mate...

AI Technical Summary

Problems solved by technology

The problem is that the shape, fixing method and material of the wheels of the lower simulated rail are different from those of the real rail, which leads to large errors and poor reliability in the measured wheel-rail contact mechanical behavior and wheel-rail damage data.

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